I recently installed Malwarebytes Premium Trial version and could observe that the product is successfully blocking calls to unwanted sites.

Whereas I am using McAfee LiveSafe since few years - whenever I visit some online streaming sites sometimes the popup comes up suggesting I am lucky winner, or my machine has virus and not allowing me to go out of that new tab opened.

My question is why McAfee LiveSafe Firewall is failing to block those sites on the fly where as Malawarebytes has that capability.

For examples - few URLs blocked realtime by Malwarebytes:

infomazaa.com:59120

usd.quebec-bin.com:62971

ynqicmcf.top:55143

Your response will help me to decide on upgrade my free version of Malwarebytes to registered version.

I could seethe stats that LiveSafe Firewall is not blocking any of these calls.

Maybe the OP hadn't yet activated WebAdvisor in their browser(s) ? It requires a reboot usually to become active. A comparison between the two anti-malware systems is difficult really as they both behave differently and anyway a comparison really belongs in an independent forum I would have thought.